.center {
  width: 100%;
  padding-top: 40px;
  padding-bottom: 47px;
  border-top: 1px solid #e7e7e7;
}
.center-main {
  width: 1280px;
  margin: auto;
  display: flex;
  justify-content: center;
}
.center-main > .list {
  width: 170px;
  height: 625px;
  position: sticky;
  top: 0px;
  margin-right: 25px;
  border: 1px solid #e7e7e7;
}
.center-main h3.tt {
  font: 18px/58px "";
  padding-left: 20px;
  position: relative;
  border-bottom: 1px solid #e7e7e7;
}
.center-main > .list h4 {
  font: 16px/34px "";
}
.center-main > .list h4 span {
  margin-right: 25px;
}
.center-main > .list h5 {
  font: 14px/36px "";
  color: #999;
  cursor: pointer;
}
.center-main > .list > .list-mian {
  padding-left: 20px;
  padding-top: 11px;
}
.center-main > .main {
  width: 1085px;
  min-height: 625px;
  border: 1px solid #e7e7e7;
}
.center-main > .list h5.check {
  color: #4b943d;
  text-decoration: underline;
}

.list-mian > a.selected{
  color: #4b943d;
  text-decoration: underline;
}

/*包含以下五种的链接*/
.list-mian > a {
  text-decoration: none;
  /* color: black; */
  font: 14px/36px "";
  color: #999;
  cursor: pointer;
  
}
/*正常的未被访问过的链接*/
.list-mian >a:link {
  text-decoration: none;
}
/*已经访问过的链接*/
.list-mian >a:visited {
  text-decoration: none;
}
/*鼠标划过(停留)的链接*/
.list-mian >a:hover {
  text-decoration: none;
  color: #4b943d;

}
/* 正在点击的链接，鼠标在元素上按下还没有松开*/
.list-mian >a:active {
  text-decoration: none;
}
/* 获得焦点的时候 鼠标松开时显示的颜色*/
.list-mian >a:focus {
  text-decoration: none;
}
